Boiler for steam-heating



(No Model.)

H. 86 O. A. MCLAUG'HLIN.

BOILER FOR STEAM HEATING. No. 377,322. q; Patented Jan. 31, 1888.

.' 8 [S] N him 7 l j boiler.

NITE STATES HENRY MCLAUGHLIN AND CHARLES A. MOLAUGHLIN, OF LEBANON,PENNSYLVANIA.

BOILER FOR STEAM=HEATING.

SPECIFICATION forming part of Letters Patent No. 377,322, dated January31, 1888.

Application filed September 4, 1880. Serial No. 212,755. (No model.)

To all whom it may concern..-

Be it known that we, HENRY MGL'AUGHLIN and CHARLES A. Mob-menus,citizens of the United States, residing at Lebanon, in the county ofLebanon, State of Pennsylvania, have invented a new and usefulImprovement in Boilers for Steam-Heating, which improvement is fully setforth in the following specification and accompanying drawings,in which-Figure 1 represents a view of asteam-boiler, the outer casing partlybroken away, showing the interior thereof. Fig. 2 represents a verticalsection of a boiler, showing the coil pipe H embodied in our invention.Fig. 3 represents the curved pipe leading from the boiler and betweenthe same and outer casing. Fig. i represents the coil-pipe shown in Fig.2 on an enlarged scale.

Similar letters of reference indicate corre sponding parts in theseveral figures.

Ouriiivention relates to improvements in steam-boilers; and it consistsin constructing the same with a coil ofpipe placed between the innerboiler and outer casing and leadinginto the return-pipe from thecondenser before its entranceintothe boiler, whereby the water ofcondensation is partially heated before its return to the boiler.

It also consists of the combination of parts, as hereinafter describedand claimed.

Referring to the drawings, A represents the outer casing, and B thesteain'boiler within the same, the lower portion of the said boilersurrounding the fire-pot thereof.

0 represents pipes leading from the upper to the lower portions of theboiler and located between the outer casing, A, and the boiler B. Thesepipes aid in increasing the generation of the steam by being subjectedto the heat in the space between the casing and the On the boiler, andconnected thereto at E, is a curved pipe, D, through which the steam, asit leaves the boiler, passes to the distributing-pipe at F, beingsuperheated by the products of combustion passing through the flues Q ofthe boiler, said flues aiding in generating the steam. Outside of theboiler and within the casing is a coil of pipe, H, which at one end, H,is connected with the boiler and at the other with the return-pipe Kfrom the radiator, whereby the return-water is heated before it passesinto the boiler at G.

Instead of the Well-known central magazine for fuel, we employ an outerhopper, L, which is connected with the fire-pot M of the boiler by thefunnel-shaped passageway N, thus utilizing the space within the upperportion of the boiler and permitting the use of a greater number ofcombustion-fines in the boiler, thereby exposing a greater surface ofwater to the direct action of the heat. The apparatus is provided withthe usual inlet and outlet pipes, safety-valves, and gages, all of whichmay be of any well-known form of construction.

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent, is

1. A steam-heating apparatus having an outer casing, an inner boiler, acircular pipe within the outer casing leading from top of boiler tosteamsupply pipe, the pipes 0, leading from upper to lower part ofboiler outside of the same, but within the casing, the coil H,communicating with the boiler and the returnpipe, and a fire-pot, allsubstantially as and for the purpose set forth.

2. In a steam-heating apparatus, a boiler with outer casing, incombination with a re turn-pipe, and a coil of pipe communicating withsaid return-pipe and boiler and located between said boiler and easing,all substantially as described.

HENRY MOLAUGHLIN. CHARLES A. MoLAUGI-ILIN. Witnesses:

ToBIAs REINonrrL, Jr., T. T. WORTH.

